The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent
Water Framework Directive (WFD) legislation requires the definition of both surface and groundwaters as a coherent set of hydrological units which could be monitored and managed. Certain parcels of...
Maps of trails, roads, and the Big Creek watershed in the Lucia/Big Creek area. Photocopies, originals, and traces of maps. Maps produced by Army Map Service and USGS. Eros Data Center computer printo
Abstract: This file contains Hydrologic Unit (HU) polygon boundaries for the United States, Puerto Rico, and the U.S. Virgin Islands. The data is a seamless National...
The Watershed and Subwatershed hydrologic unit boundaries provide a uniquely identified and uniform method of subdividing large drainage areas. The smaller sized 6th level sub-watersheds (up to 250,00